Pneumatically-controlled music-playing device.



P. WBLIN.

PNEUMATIGALLY CONTROLLED MUSIC PLAYING DEVICE.

APPLICATION FILED rm. 5, 1907.

1,063,898. Patented June 3,1913.

9 SHBETS-SHEET 1.

COLUMBIA PLANOGRAPH co. WASHINGTON n. c

P. WELIN.

PNEUMATIGALLYGONTBOLLED MUSIC PLAYING DEVICE.

APPLIOATION FILED r1113. 5, 1907.

1,063,898. Patented June 3, 1913.

9 SHEETS-SHEET 2.

r-r 7/ v COLUMBIA PLANOGRAPH C0.,WASHINOTON. I) c P. WBLIN.

PNEUMATIGALLY CONTROLLED MUSIC PLAYING DEVICE.

APPLICATION FILED rm. 5, 07.

1,063,898, Patented June 3, 1913.

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PNBUMATIGALLY CONTROLLED MUSIC PLAYING DEVICE.

APPLIOATIOH FILED FBB.5,190'7.

1,063,898. Patented June 3, 1913.

9 SHEETS-8HEET 4.

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OOLUMBIA mnoGruum 60-.WASHIMTON. n. c.

P. WBLIN.

PNEUMATIGALLY CONTROLLED MUSIC PLAYING DEVICE.

APPLICATION FILED IEB.5, 1907.

Patented June 3, 1913.

9 snnn'rHmEn-r 5. 19 20 III 0 5:52 J? ll lll A m\\\ \B COLUMBIA PLANOGRAPH :0. WASHINGTON. D. c.

P. WELIN.

PNEUMATIGALLY CONTROLLED MUSIC PLAYING DEVICE.

APPLICATION FILED FEB. 5, 1907.

1,063,898. Patented June 3, 1913.

9 SHEETS-SHEET 6.

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P. WELIN.

PNEUMATIGALLY GONTROLLED'MUSIG PLAYING DEVICE.

APPLICATION FILED FEB. 5, 1907.

1,063,898. Patented June 3, 1913.

9 SHEETS-SHEET 7.

Z771/6/7/0/ M63565 Pe/er Well/i.

gyv aawg COLUMBIA PLANOGRAPH (10.. WASHINGTON. 0. c4

P. WBLIN.

PNBUMATIGALLY CONTROLLED MUSIC PLAYING DEVICE.

APFLIUATION FILED FEB. 5, 1907. 1 063 898 Patented June 3, 1913.

9 SHEETS-SHEET 8.

Dye/Mar: .0. Idf'W/l war /946 COLUMBIA PLANDGIIAPH 20., WASHINGTON, D. c.

P. WELIN.

PNEUMATIOALLY CONTROLLED MUSIC PLAYING DEVICE.

APPLICATION FILED FEB. 5, 1901.

1,063,898. Patented June 3, 1913.

9 SHEETS-SHEET 9.

wLUMBIA PLANOGRAPH 60., WASHINGTON, n. c

UNITED STATES PATENT OFFICE.

PETER WELIN. OF NEWCASTLE. INDIANA, ASSIGNOE, BY MESNE ASSIGNMENTS, TO THE KRELL AUTO-GRAND PIANO CO. OF AMERICA, OF CONNERSVILLE, INDIANA, A

CORPORATION OF INDIANA.

PNEUMATICALLY-CONTROLLED MUSIC-PLAYING DEVICE.

Application filed February 5, 1907.

Specification of Letters Patent.

To all whom it may concern Be it known that I, PETER VVELIN, a citizen of the United States, residing at Newcastle, in the county of Henry and State of lndiana, have invented a new and useful Pneumatically Controlled Music Playing Device, of which the following is a specification.

This invention relates to that class of music playing devices which, whether in the form of automatic pianos or the like, or in the form of separate devices for playing ordinary musical instruments, are operated pneumatically. I have heretofore filed several applications on inventions relating to this type of instrument as follows: Ser. No. 351085 filed January 7. 1907: Serial No. 390,749, filed December 7, 1905; Serial No. 3 1.086. filed January 7, 1907; Serial No. 351,087. filed January 7, 1907; and Serial No. 351,088, filed January 7, 1907.

The objects of this invention are to improve instruments of that character, and to provide means whereby the accenting efiect in such an instrument can be controlled from the music sheet, or from any other device for the same purpose, without interfering with the manual operation of the acz-enting meclianisimthis being accomplished, in an instrument having a tracker-bar over which a music sheet passes. by the employment of additional channels in the trackerhar and corresponding additional perforations in the music sheet.

Another object. is toprovide means for cutting out the automatically operated mechanism for controlling the accenting effect so that the same instrument may be used with music sheets not cut for this purpose.

Another object of the invention is to provide a more convenient arrangement of the hleeder passages in the modulating valve box.

Further objects will appear hereinafter.

This invention can be used on automatic musical instruments and on players for musical instruments.

Reference is to be had to the accompanying drawings which illustrate p acticable modes in which the above mentioned principles can be applied to automatic pianos and to piano playing devices and in which,

Figure 1 i a front elevation of a portion of a combination piano showing the tracker box and modulatingyalve box and the channel board with connections. Fig. 2 is a plan of the modulating valve box showing a sliding valve and connections for operatingthe same and also illustrating a switch valve box and its connections and other features of the invention. Fig. 3 is a plan of mechanism for cutting out the extra connections from the additional channels of the tracker-bar showinga portion of the trackerbar in perspective. Fig. 4 is a sectional view on the line 44 of Fig. 3. Fig. 5 is a plan of the switch valve box. Fig. 6 is a sectional view of the same on the line G of Fig. 5. Fig. 7 is a bottom plan view showing the openings to the outer air, the valve not being shown in this figure. Fig. 8 is a plan of the sliding valve with portions removed to show interior construction. Fig.

9 is a similar view with the valve in a dittcrcnt. position. Fig. 10 is a bottom plan of the top plate of the sliding valve. Fig. 11 is a plan of the second plate of the modulating valve box, the top plate being removed. Fig. 12 is a plan of certain portions of the modulating valve box-with the horizontal plates broken away in different planes to show the relative positions of the. parts. Fig.- 13 is a plan of a plate on the modulating valve box below the lowest plate that appears in Fig. 12. Fig.14 is a plan of the plate located below that shown in Fig. 13. Figs. 15 and 16 are plans of other plates of the modulating valve'box. Fig. 17 is a longitudinal vertical sectional view taken on the line 1717 of Fig. 19. Fig. 18 is a horizontal sectional view on the line 1818 of Fig. 17. Figs. 19 and 20 are vertical sectional views on the lines 19-19 and 20-20, respectively, of Fig. 17. Fig. 21 is a longitudinal sectional View of a preferred form of one of the operating pneumatics showing the interior construction and connections. Figs. 22 and 23 are plans of certain plates of the valve box shown in Fig. 21. Fig. 24 is a diagrammatic view indicating certain features .of the invention and showing how the several parts may be connected together. Fig. 25 is a view similar to Fig. 1 showing a construction which can be adopted when this invention is to be applied to a piano player. Fig. 26 is a plan similar to Fig. 2 as applied to a piano player. Fig. 27 1s a plan of mechanism for cutting out the extra connections from the additional channels ofthe tracker-bar showing a portion of the tracker-bar in perspective, as applied to a piano player. Fig. 28 is a plan of the switch valve box for a piano player. Fig. 29 is a bottom plan view of a part" of the switch valve box-showing the air inlet passages. Fig. 30 is a side elevation of the switch valve box showing the operation'of the valve therefor. Fig. 31 is a longitudinal vertical sectional view of the modulating valve box for a piano player with the switch valve box forming apart thereof and taken on the line 3131 of Fig. 32. Fig. 32

is a sectional view onthe line 3232 of Fig. 31, and Figs. 33 and 34'are-plans of two plates of a modulating valve box of ,a piano player.

By reference to acteristics and operation of adevice in a simple form exhibiting the principles of this invention in connection with that of my above mentioned application can ob served. This figure, while especially de' signed for the application of the invention to an automatic or combination piano, ex. hibits the same with suflicient-breadth to indicateits application to a pianoplayer or other such instrument.

A suction tube 27 connects-ani'aid windchest with asuction chamber 28 of the modulating valve box. In this chamber are located a series of pneumatics 29, one for each note or series 'of'notesas desired. -In the present instance, one of these pneumatics is shown for each octave. These pneumatics are supplied as desired with atmospheric air through channels 30 individually controlled by a valve 31 or the like to permit the admission of air to any desired one or more of the pneumatics. When air is admitted, it raises a pneumatic and operates the corresponding valve 32. The rise of this valve admits atmospheric air through a passage 33 to a chamber 34 and a passage 35 to a tube 36. The passage 35 is controlled by a valve 37 in each instance. If this valve is open, as shown in F ig. 24, the atmospheric air will pass through the passage 35 and along a corresponding tube 36 to' a channel or series of channels 38 which, if a plurality of notes are to be modulated simultaneously, are connected together in sections with a plurality of modulating channels 39 which, in the form shown, are connected with the Fig. 24, the general charpneumatics of an octave. The air passing through the channels, 36, 3S and 39 operates a pneumatic 40 to lift a throttle valve 41 located in a suction chamber 42 to throttle the passage between this chamber and the striking pneumatic 43. The operation of this pneumatic is controlled by the music sheet or the like, the perforations of which admit air through tubes 44 to primary pneumatics 45. In each case this raises a valve 46 to cut off the suction from a channel 47 and admit atmospheric air there-to so as to raise a secondary pneumatic 48 and its valve 49. This valve connects the striking pneumatic 43 for that note with the suction chamber 42 as stated.

It will be observed that with the construction specified the throttle valves of all the notes of an octave will be set simultaneously so that when their striking pneumaticsare connected with the suction chamber 42 by the action of their respective pneumatics 48, the air passage will be thrott-led to soften or modulate the tone. All this is in accordance with my above identified application. If, while this state .of affairs con.- tinues, it is desired to set the connections so that one or more of the notes-of that octave will be accented when sounded, a controlling arrangement for aportion of the -modulat ing connections is operated. to set them to operate the notes. This comprises a lever 52 which'is manipulatedto force down a valve 53 'in a switch valve box 54 so as to admit atmospheric air through a plurality of openings to. a corresponding number of passages '55 therein. The depression of the valve consequently admits air to each one of the passages 55 and it passes through each of the tubes 56 'to switch valve'cha-mbers 58, each of which is provided with a pneumat-ic 59, each one adapted to operate one ofthe valves 37 to close it on admission of air to the proper chamber. Consequently, upon the taking place of this operation a portion of the above described modulating connections is operated so that all these valves are simultaneously operated to cut ed the air from the passages 35 and connect them directly with the suction chamber 28. This prevents the softening action while the lever 52 remains depressed although the position of the modulating valves 32 is not changed. By the proper construction and operation of the sliding valve 31 and by the manipulation of the lever 32, any desired octave orother set of notes, according to the construction of the instrument, can be softened or modulatedwhen they are operated from the tracker-bar in the usual way. Also, if desired, any one or more notes of those which are softened can be accented by manual manipulation without interfering with the operation of the modulating mechanism. If it is desired to operate the several pneumatics 59 automatically, and control the operation of the same by perforations in the music sheet, the trackerbar is provided with a number of additional channels 444. these being connected by tubes 57 with the tubes or passages 56. Means is preferably provided whereby the air will pass into the additional channels in the tracker-bar slightly in advance of its passage into the corresponding note channels. This may be accomplished by setting the corresponding perforations in a music sheet slightly ahead, by making the supplementary channels larger as shown, or by otf-setting the channels in the other direction as is indicated in Fig. 24. The operation of this device when air is admitted through one of the channels 444 will be obvious. The efiect is substantially the same as that of operating the lever 52 except that only one of the pneumatics 59 is operated instead of all of them.

It will be seen that as the passages .55 terminate in the bottom of the switch valve box, they are entirely out of communication with each other when the valve thereof is closed. The principles of the invention can be carried out in a very simple manner and for illustration of a practical construction thereof, reference is to be had to the other figures.

By reference to Figs, 1 and 2. it will be seen that the modulating valve box 280 as described in my above mentioned application is located adjacent to the tracker-box 440. The tracker-box may be of any desired construction but is shown as provided with a glass front plate 441 on which is located a scale 44.2 above the tracker-bar so that the perforations in the paper can readily be seen through the scale and their position relative thereto observed. As the invention is illustrated in that form in which each passage 38 connects with the pneumatics of an entire octzwe, the scale is shown as indicating octaves.

The operation of the sliding valve 31 is shown as accomplished through a rock shaft (30 connected with the sliding "alve by link work (51 and connected with an operating lever 62. The rock shaft 60 is also connected by links 63 with a pointer 64 passing over a curved indicator G5 on the tracker-box and showing the position of the sliding valve and the octaves or other sets of notes which are modulated.

The sliding valve 31 can be constructed in many ways and the position of the openings in the top of the modulating valve box which communicate with the modulating valve pneumatics will, of course, modify the construction of the valve. It is shown, however, in Figs. 8, 9 and 10, as consisting of two plates; an imperforate top or cap plate 310 and a perforated bottom plate 311. The modulating valve box is also provided with a top plate 300 and in this plate are two series of openings or passages, there being six in each series in the present case as there are six octaves to which they are to connect. The passages of one series are designated 30 30". 30 30. 302 and 30, respectively. Those of the second series are designated 30, 30 30 30, 30 and 30*. Each of the pneumatics 29 is connected with one passage in each series. The passages of one series are so located that on the travel of the valve they will all be either covered or exposed simultaneously. Therefore, if the valve has a straight sliding motion as shown, and a straight end, they are located in a straight line but they are shown as located in two lines and the valve 31 as be ing provided with notches 312 for admitting air to those in the rear row, at the same time that air is admitted to those in the other row. the position of the pasages and shape of the end of the valve being mutually de-' pendent on each other, and on the kind of motion imparted to the valve 31.

When the valve is in the position shown in Fig. 9, all the passages 30, 30", etc., are exposed to the air. If the valve now moves to the left, they will each first be closed by the valve and on further movement of the valve in the same direction, the passages 30. 30, 30, 30. and 30% will be bled by being located under a series of perforations 314 in the bottom plate 311 of the valve. These perforations are of diiferent lengths to provide for keeping them in communication with the several passages in the plate 300 different periods of time and they all communicate with a channel 315 in the lower side of the top plate 310. This chan-. nel also communicates with another perforation 316 in the bottom plate 311 which, tbrmighout the travel of the valve, is-located over a passage 301 in the plate 300 which communicates with the suction chamber 28 so as to bleed the several pneumatics 29 when the "alve is in the proper position therefor.

In the position just described all the pneumatics except one will be placed in communication with this passage 301 and restored to their normal condition ready for further operation. The reason the passage 30 is not bled at this time is because a. notch 313 in the valve now comes into registration with the passage 30 which is connected with the same pneumatic as the passage 30. Consequently, the pneumatic connected with these two passages is open to the air and that octave is modulated.

In the form shown, the passages of the seccnd series are arranged in two parallel lines which are in the line of motion of two perforations 317 and 318, in the bottom )late 311 which communicate with the passage 315; whereby all the pneumatics can be bled in an obvious manner. On further movement to the left the passage 30 is exposed to the air while that perforation 314 with \vh'ich'the passage 30 was connected now passes beyond that passage and the bleeding of the pneumatic 29 connected with the passages 30 and 30 is stopped. As the valve continues to move to the left. these operations are repeated with the other passages and pneumatics. \Vhen the passage3-0 is closed by the advancing side of the notch 313. it comes into communication with the perforation 317 in the bottom plate 311, to bleed that pneumatic. The corresponding perforation 318 successively connects the perforations 30 and those in line therewilh with the channel 315 in the same way.

It will be seen that as the valve moves, the indicator 64 moves with it and shows which octaves are modulated. In the form shown, this indicator when on the numeral 6 indicates that the sixth octave alone is modulated, but when on the numeral 5 it indicates that both the fifth and sixth are modulated and when. on the numeral 4 it shows that all threeare connected in this manner; In the spaces between the numerals 4 and 3, there will-be positions in which octaves'4and- 5 and :then octaves 3 and 4 are modulated;: .The'same state-0f affairs occurs on the bther'side. When the pointer is beyondthe scaleon the left, it indicates that all the passages of one series areclosed and thereis nomodulation-,ibut when be yondthescale on the right, it indicates that they are'all open, the slide bein in the position-shown in Fig. 9,and all t e notes of the instrument modulated.

- The passage of the air from the two series of "passages represented by I the characters 30 and-30 ,-etc., to the Pneumatics 29 will now" be tracedQ Fig.11 shows a-plate 302 containing continuations of the two series of passages in the plate 300, these continuations being given the samereference charactors as they are in the plate 300. Channels are provided either in the top or bottom of the plate302 for connecting the passages of the two series. For example, a channel 3 connects the passages 30 and 30 Channels 3", 3, 3, 3, and 3 are also provided for connecting the other passages. Some'of these channels are located entirely on one side of the plate, while others are located partly on one side and partly on the other, the two parts being connected by a perforation. .Each of these channels is also so formed as to communicate with one of the series of six channels 30. It will be seen, therefore, that through the series of channels 3, 3", 3, 3, 3, and 3, which are connected with the neumatics 29, all of the passages of the two sets in the top plate 300 are put into communication with their respective pneumatics. The passage 301 is located directly over, and terminates in, a channel 303 in the plate 302 which communicates with a perforation 304. This perforation 304 communicates with the suction chamber 28.

Below the plate 302 are a series of parallel plates 281, 282, 283, 284, 285, 286, 287 and 288. These plates, when properly located, together with the plates 300 and 302, constitute the upper part of the modulating valve box. By reference to Fig. 19, it will be seen that each of the passages 30, extends through all of these plates except 287 and 288. Each passage 30 communicates with the corresponding pneumatic 29 which is supported on the top of the plate 286. The suction chamber 28 is located in the plate 285 and bounded on the top and bottom by the plates 284 and 286. The former of these plates has a passage for the valve 32 to connectthe suction chamber with the passage 35 above mentioned, which is located in the plate 28 The plate 285 has a channel communicating with the passage 304 which thus leads to the suction chamber.

In the plate 282 is located the chamber 34 which is in communication with the outside air through the passages 33. Although in Fig. 24 a separate one of these chambers and passage is shown for each modulating valve, it is preferred to construct the same in the form of a single long chamber extending throughout the main part of the length of the plate 282.

By reference to Fig. 24, it will be seen that the passage 35 communicates with one of the tubes 36 except when the passage 18 closed by the switch valve 37. The construction of the various elements making up this part of the apparatus can be varied within wide limits but a convenient way in which the various passages and other features can be located is illustrated in the drawings.

Into the passages 351 of the plate 282 project a series of springs 371 carried by the plate 281 each for engaging a valve 37 and normally assisting in holding it down on its lower seat. The plate 282 is provided with perforations which constitute portions of the passages 35. This isillustrated in the form of a series of direct perforations 351 each communicating with a channel 352 communicating with the passage 35 and in the top of the plate 282 these perforations 351 are connected with slots 353 which communicate with perforations 354 which in turn communicate through, perforations in the plate 283 with the mainparts of the passages 35. The plate 283 also contains continuations of the perforations 351 and a series of perforations 355, over which the upper part of the valve 32 seats. The plate nels 351 and 354 and the main parts of the passages 35. which extend upwardly throu h the perforations 355 through which the valve 32 passes. -The passa es 35 are connected with the suction cham r by perforations 356. v'lhe next plate below; namely, that numbered 285, as has been stated, con tains the suction chamber 28. into which perforations ,356 enter and it also ,communicates through perforations 357 with the passages 352 in the plate 284. vThese passages ,352 extend down through the plate 285 aswell as through all' the plates below-it and as has been said, the passage 304 extends into the notch 305 in the plate 285 through which it connects with the suctionchamber. This plate gush s jachannel 270 communicating the suction pipe 27.

Theparts just: described are substantially thesame as disclosed ,in myabove mentioned application., ;,Theplate 286, in the present casQebntain's perforations constituting part of" the passages 30, and 352 and of .the chambers '58,'channelsin the under side of this-plate;also constituting part of the passages 30. The next 'platenumbered 287 is merely provided with two sets of six perforationseach, constituting portions of the passages 352 and' chambers 58. The same is true of, the plate 288, and it is provided with six channelson its up'perand lower faces extending from the passages 352 downwardly that they may communicate with the tubes 36. It also has channels constituting part of the chambers 58.

The chambers 58 and passages 352 extend through aseries of plates 70, 71, 72, 73, 74, 75, 6, 77 and 78, at the latter of which the passages 352 are connected with tubes 36: and the chambers 58 are divided, each being connected with a tube 56, and also with a tube 57 which communicates with one of the extra tracker channels 444 as has been stated. These tubes 57 extend from a block or plate 570 on the modulating valve box to a channel plate 571 (see Figs. 2, 3 and 4) which has two series of separate channels 572' and 573, terminating in the top of the plate 571 at a short distance from each other. The channels 573 are connected at their other ends through the tubes 57 with the tracker channels 444. The breaks in the passages are opened or closed by a sliding valve 575 having passages adapted to individually connect the passages 572 and 573 when the valve is in one position and to disconnect them when in any other position. This valve is controlled by a manually operative rod 576. Therefore theconnections for the automatic operation of the throttle valves by the music sheet can easily be cut oil to permit the device to be used with paper not especially cut for it. A spring 577 holds the valve to its seat.

The tubes 56 are connected with the switch 6 valve box 54 in aImanner indicated in Figs.

5 and 6. The construction of this box has been indicated by the description above veil and the mnner of operating the lever 52 is all that need be described. As in my abo e mentioned application this lever is raised and lowered to operate the valve 53 instead of being swung on a vertical pivot as is the case with most of the levers employed on instruments of this character. It is shown in Fig. 2 as being pivoted in bearings 520 and as havingan arm 521 Which is adapted to be operated by the raising and lowering of any desired one of the levers employed for regulating the instrument. It might be operated by the lever 62 but it is shown as operated by the tempo lever 522, the lever being moved to operate the valve in a plane parallel with the 'axis'of the pivot on which it swings to regulate the tempof "l The switch valve box is notprovidedwith separated connections to'the suction chaIn -i ber, but the modulating valve' boxihas a bleeding device for each chamberf58 i'icon tained in the plates 71, 72 and 73, which will now be described. These plates con tain channels or passages 730 connecting "the chambers 58 with a suction chamber .720. In order to restore the pneumatics 59 to their normal condition under suction after air has been admitted 'and they have been disconnected from the outer air the following mechanism is shown. ,In each of the channels 730 which is directly connected with the suction chamber 720 is a pin-hole disk 710, providing a restricted openmg. In the chamber 720 are pneumatics 721 from which depend valves 722 each provided with a spring 723 for assisting in returning it to the position which it occupies when there is no air on the pneumatic. The top of the pneumatic communicates with the chamber 58 through :1 passage 711. The chamber 720 in which the valves are located communicates with the suction chamber 28 through a passage 724 and is always under suction.

\Vhen an impulse of air passes into a chamber 58 and channel 730 it also passes into a passage 711 and operates the pneumatic 7 21 to close the valve 722 and cut the channel 730 off from communication with suction and permits the impulse of air to act on the pneumatic 59 in the manner above described. After the channel in the trackerbar or switch valve box is closed, the natural leakage around the valve 722 will re here the same so that the spring 723 can push the .valve 722 away from its seat and restore the elements to normal condition when the channel 730 will a ain be connected with the suction so as to her 58. One of these valves is of course, used for each of the chambers 58.

The channels 38 are located in a channel board 380 and are shown in the form of leed the chamseries of connected channels each of the series communicating in this instance, with eleven valve boxes and striking pneumatics. This communication is made in each instance through one of the passages 39. This channel board is also provided with one perfora tion 420 for each valve box, communicating with the suction chamber 42. These various passages communicate with the valve boxes 430 in any desired manner. By reference to Figs. 21, 22 and 23 a practical manner of connecting these elements will be seen. The operation of this part of the device has been sufliciently described with reference to F ig. 24. One feature, however, is indicated in detail in this figure which is not shown in Fig. 24. This is a resilient means for controlling the operation of the throttle valve 41 and an adjustment therefor. This is constructed. as follows: A spring 66, is provided for normally holdin the valve 41 down and preventing its rising far enough to throttle the air passage. As-these springs are liable-to lose part of their resiliency in use, means is provided, for adjusting the tension thereof. For. this purpose each spring 66 is so formed that: the part extending from the stationary end of the. spring is on. an incline and a, block 67 is mounted between, this incline and the wall of the passage in which it is. locatedathisgbleclg being adapted to limitthe'motiofi "bf. thfsp'rin -in one direction. Means. is; rovidedifor shift ing thisblockback and orth toadjust the tension. of the spring. Thisim'eans is shown in the form. of a screw'68 extending out of the. valve boxso that it canbe manipulated from the outside. Thefscrew 68 isheld in adjusted position by meansofanut 69. thereon whichfis in turn held by, a clamp 70 secured, in position by the boltsby which the valve-boxes arefastened, as set forth in my above mentioned application.

InFigs. 25 .to34, I have illustrated a constructionin whichjt-hisinvention is applied to a piano player. In these figures the same reference characters refer to corresponding parts. and the .operation is similar to that described. In this case, however, the sliding valve is mounted below the main part of the modulating valve box and the switch valve box instead of being separate, is mounted directly on the modulating valve box. Although the construction of the switch valve box is somewhat modified, its operation. is the same. The valve 530 is operatedby a lever 540 in away which is substantially a reversal of that described above, the valve seating upwardly as before but the lever being connected directly with it. The passages 550 have the. sameaction as the passages 55 and are connected with the chambers 58 in a similar manner. The sliding valve 310. is mounted on 'the plate 300 which is located above the plate '302 tha comm nica es p downwardly with the suction chamber 28. In this case, this suction chamber 28 is separate from the valve chambers in which the valves 37 are located. The bleeding arrangement-is. substantially the same as that above described.

Although it is believed that the operation of the piano player will be obvious from what has been stated, a brief description thereof will be given. The modulating valve box 280 has a suction chamber 28 connected with a source of air tension. In this chamber are located; a series of modulating pneumatics 29' one for each note or series of notes, as. desired. In the present instance one of these pneumatics serves for the notes of an entire octave but this may be varied in the construction of the instrument in accordance with the conditions existing. These neumatics. are supplied as desired withv atmospheric air through channels 30 individually controlled by the valve 310 which is manually operative to admit air to any desired one of the pneumatics. When air' is admitted it raises the pneumatic 29 and operates a valve 32, the raising of which admits atmospheric air through a series of passages 33 each of which communicates with afchannel: 35' leading to a pneumatic for lifting. a throttle'valve located in another suction chamber of the valve boxf to throttle the passage between this chamber and the corresponding striking pneumatic, which, is not shown inft his modification.

In the construction specified; the passages to operatean entire octave are thus simultaneously throttled, The operation of the striking pneumatic is preferably controlled wardly instead of v byt e music sheet in the ordinary, way; It

is to be observed. that the throttle valves of allthe notes of an octave or other seriesare simultaneously set so that when their striking pneumat-ics are connected'with the suction chamber by the action of the usual mechanisms, the air passage will'be throttled to soften or modulate the tone. If, while this, state of'affairs continues, it is desired toaccentone or more notes of that octave as it is played the lever. 522 is manipulated to. operate the switch valve 530 and open each oft-he passages 550 leading to all of the switch valve suction chambers 58 and open each to reestablish communication between the suction chamber 28 and all of, the passages 36, thus preventing the softening action whilethis lever is operated, although the position of the modulating valves 37 and their pneumatics 59 is not. interfered with in.any way. This, obviously, is done by manual manipulation. If it is desired to control this action by the music sheet, the tracker-bar is rovid'ed'with additional channels444' and the music sheet with corresponding perforations. The air is then admitted through any desired one of these channels by means of a music sheet perforation to one of the channels 550 which operates the desired throttling valve pneumatic 59 to open the valve and reestablish communication between the suction chamber 28 and the corresponding passage 36, thus preventing the softening action on this section or oc tave. The suction chambers 58 are bled by means of a series of bleeding devices similar to those described.

While I have illustrated and described two particular embodiments of my invention, 1 am aware that many modifications may be made therein without departing from the spirit of the invention as expressed in the claims. Therefore, I do not wish to be limited to the particular construction shown but What I do claim is 1. In a music playing device, the combination of means for playing a musical composition, a plurality of means for modulating or softenlng series of notes, means for controlling said playing means to accent all the notes while the softening means remain in operative condition, and means independent of the softening means-for operating said controlling means individually.

2. In a music playing device, the combination of means for playing a musical composition, a plurality of means for modulating or softening series of notes, means for controlling said playing means to accent the notes of all of said series while said softening means remain in operative condition, manually controlled means for simul taneously operating all the controlling means, a tracker, and means operative from channels of the tracker for operating each of said controlling means independently of the rest and of the softening means.

3. In a music playing device, the combination of a tracker-bar, means controlled from the tracker-bar or the like for operating a striking pneumatic for each note, throttle valves, manually controlled means for setting a series of said throttle valves to soften their respective notes when operated from the tracker-bar, means cooperating with said setting means for operating the throttle valves to accent a note while parts of the manually operated means remain in position for modulating all the notes of the series, means operative from channels of the tracker-bar of the device for controlling said accenting means, and means for rendering the last named means inoperatii'e, whereby the device can be used with music sheets not cut for that purpose.

4. In a music playing device, the combination of a suction chamber, a plurality of series of throttle valves pneumatics therefor, a modulating valve for each of said series adapted to connect the throttle valve pneumatics of its series with the suction chamber or the outside air, a plurality of switch valves, one for each series simultaneously operative to connect all of the throttle valve pneumatics with the suction chamber independently of the position of the modulating valves, and independent means for operating any one of said switch valves independently of the others to connect the corresponding throttle valve pneumatics with the suction chamber. p

5. In a music playing device, the combination of a switch valve box having a plurality of independent passages each having an opening to the outer air, a manually operated valve adapted to close or open all of said passages simultaneously, a tube extending from each of said passages, a modulating valve box having suction chambers one connected with each of said tubes, a pneumatic in each suction chamber, a switch valve for each of said pneumatics, a second set of tubes each of which connects with one of said suction chambers, and a tracker-bar having channels individually connected with the second set of tubes.

6. In a music playing device, the combination of a modulating valve box having a suction chamber, a series of switch valves therein, a pneumatic for each switch valve, an additional suction chamber for each of said pneumatics, a switch valve box having a plurality of channels, one connected with each of said suction chambers, a valve for closing or opening all of said channels simultaneously and a tracker bar having ordinary note channels, and additional channels each directly connected with one of said suction chambers, whereby the switch valve pneumatics may be operated automatically from the tracker bar or manually and simultaneously from the switch valve box.

7. In a. modulating valve box, the combination of a series of suction chambers, a pneumatic in communication with each of said suction chambers, a valve connected with each pneumatic, a suction chamber in which each valve is located, and passages, one leading from each of said last named suction chambers, normally closed by one of said valves and communi eating with said first named suction chamber through a restricted opening.

8. A modulating valve box having a suction chamber, a second suction chamber, a pneumatic located between said suction chambers, a valve carried by said pneumatic, and a spring for normally forcing said valve from its seat, said box having a passage controlled by said valve for connecting said suction chambers through a restricted open- 'ng.

9. A bleeder device for a pneumatic, comprising a suction chamber having a passage therefrom, a second suction chamber or passage communicating with the first named passage through a restricted opening, a valve for closing said first named passage, a spring for normally lifting said valve from its seat, and a pneumatic connected with said valve and having a surface in position to be operated upon by air entering the second suction chamber or passage to close the valve and cut off said second suction chamber or passage from the first named suction 10 chamber.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

PETER WELIN.

Witnesses: v

I J AS. P. REEVES,

EIHVARD B. PFAU.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of latents. Washington, D. C. 

